Pile-cutting device



P. A. WAGNER PILE CUTTING DEVICE Apr. 17, 1923. ,7

Filed March 21 1922 if g wwm ening or the substitution of previously t 17 having 1ts forward upper face inclined Patented Apr. 17, 1923.

warren .s'rarss PATENT o F c PAUL AIWAGNER, or JERSEY orrv, NEW JERSEY.

FILE-CUTTING DEVICE.

Application filed March 21, 1922. Serial No. 545,399.

' production of-pile fabrics, and the object of the invention is to provide simple, easily operatedhmeans for severing the floats along the central lines of the rows, and in which thesevering operation is performed by a pinching or biting action as distinguished fromthe' cutting or shearing action of a bladeedge, whereby a long period of efficien't service is. assured and the necessity of maintaininga keenedge by frequent sharpsharpened blades is avoided. I

The inventionconsists in certain novel features and details of constructionand arrangement by which the above and other objects are attained, to be hereinafter described and claimed. I 1 x r I I The accompanying drawings"form a part of this specification and show an approved form of the invention. Figure 1 is'a-side elevation-of the improved cutter, with so much of its support-.

ing and operating means as is necessary to show-its relation thereto;

Figure 2-is' a corresponding vertical longitudinal section, partly in elevation, sh0w-- ing thecut'terequippedwith a pile-wire and arranged to cut the floats during the weave ing operation.

F gure 3 1s a correspondlng plan v1e,w. i

' The remaining figures are on a. greatly to form a deep openchannel having the exaggerated scale.

Figure .4 is'. a vertical section, partly invertical longitudinal section corresponding to-a portion of Figure 2, showing the construction and operation of the th read-severins j Figures 5 andG are vertical transverse sections, taken on the lines 5 5 and 6-6 respectively in Figure 4.

Figures? and 8 aresimilar sections showing modified forms of jaws. 7

Referring to Figuresl to 6 inclusive, 10 is thebody portion of a frame or carrier, preferably of'sheet steel folded upon itself sides brought together at'the rear as at 11 and riveted to form an extension serving as asupport for the body and permitting .a slight degree of lateral flexibility. The extension 11 is shown asnotched on the under sid near therear end to match upon a rib 12 on a fixed plate 13, and is held in engages ment by a bar 14" applied upon the upper edge and clamped thereonby arms 15 ex tending from studs 16 on the plate 13.

lVhenmounted to serve upon a loom, a plurality of such narrow carriers 10 and 11 will be arranged side by side on the plate 13,- one for each line of floats, and when mounted to serve withgpreviously woven fabrics, a series of such carriers are arranged side by side suitably supported and adapted to be moved relatively to the goods 3 to be treated.

At the forward end of the body portion 10is a forwardly projecting narrow tongue upwardly and rearwardly as at 18 and its rear upper face 19 flat and straight and in-. closed between the cheeks of the body. The.

performs itsusual function of guiding the,

floats to the tongue. The plane faced rear portion 19 of the tongue serves as the fixed lower jaw of the severing mechanism and is preferably of steel, spring hardened. i

The upper jaw is marked21 and is a thin plate of steel preferably extremely hard, arranged to be oscillated vertically between the cheeks of the body on a pivot 22 extending through the body at the rear. The lower margins of the m ovable'aw 21 at the front are beveled in opposite vdirections to produce a bitingedge 23 so shaped as j to lie parallel withand upon the plane upperface of the relatively fixed'jaw- 19 when the upper jaw isforced downwardly. I The "movements of the upper jawimay be effected by various'means; as shown, itis urged normally upwardby the force, of a spring 24 set in its plate near the pivot. 22

and acting against the interior lower face disposed rollers 28 supported in radial arms 29 on a revolving shaft 30, located to strike the upturned end 37 of the arm 36 and by acting cam-wise thereon force: the arm. downward. The elasticity of the arm 36 permits the roller to pass without damage when the jaws are thus brought together while insuring the desired strong bite, and the differ ence in length of the lever arm represented by the long distance between the pivot 22 and the point of contact of the roller 28 with the arm 36, and that represented by the short distance between the pivot and the heel 25 is sufficient to bring the jaws together with all the force required to bite through any float threads presented upon the lower jaw.

In operation, the rollers 28 andv spring 24- induce rapid opening and closing movements of the jaws which thus sever the float threads by such biting or. pinching action. The threads may be fed slowly to the jaws as will be the condition when the device is used in conjunction with a loom, as indicated in Figure 2, or rapidly as will be the condition when the cutter is moved along the line of floats on previously manufactured goods.

It has been found that a sharp cutting edge is not necessary and that the shape of such edge is not essential; the angle of 60 as shown in the drawings performs sat-isfactorily but may be varied.

In order to avoid unnecessary wear on the biting edge it is preferable to make the upper jaw. as shown greatly enlarged in Figures 4-. 5 and 6, in which a plane rear portion 31 of the lower face of the movable jaw 21. projecting almost imperceptibly below the edge 23, is arranged to contact with the plane upper face of the lower jaw 19 in the closing movement and thus arrest the closing movement after the threads have been bitten through but before the edge 23 comes in actual or complete cont-act with the lower jaw. It is found that such construction preserves the edge without in any way lessening the biting action of the jaws.

In Figure 7 the fixed lower jaw is provi ded with a biting edge 32 and the movable upper jaw is plane, and in Figure 8 both jaws 34 and are edged. In both forms the offset construction above described may be employed to prevent damaging contact of the biting edges, or such construction may be omitted in all the forms shown.

I claim 1. In a device of the character set forth, a pair of jaws one movable relatively to the other, having their adjacent faces arranged to strike in biting contact one upon the other to sever a thread presented between said j aws, and means for opening and closing said jaws.

In a'device of the character set forth, a pair of jaws one movable relatively to the other, having their adjacent faces arranged to strike in biting contact one upon the other to sever a thread presented between said jaws. a tongue adapted to engage a line of floats and present the threads thereof between said jaws, and means for opening and closing said jaws.

3. In a device of the character set forth,

a carrier, a fixed aw mounted therein having a face, a tongue extending from said fixed jaw arranged to present pile threads upon said fixed jaw. a. movable jaw pivotally mounted in said carrier and having a face arranged to strike in biting contact upon the adjacent face of said fixed jaw and sever such threads, and means for moving said movable jaw'relatively to said fixed jaw.

4. In a device of the character set forth, a carrier, a fixed jaw mounted therein having a face, a tongue extending from said fixed jaw arnnged to present pilethrcads upon said fixed jaw. a movable jaw pivotally mounted in said carrier and having a face arranged to strike in biting contact upon the adjacent face of said fixed jaw and sever such threads. and resilient means for moving said movable jaw relatively to said fixed jaw.

5. In a device of the character set forth, a carrier, a fixed jaw mounted therein having a face, a tongue extending from said. fixed jaw arranged to present pile threads upon said fixed jaw. a movable jaw pivotally mounted in said carrier and having a face arranged to strike in biting contact upon the adjacent face of said fixed jaw and sever such threads. resilient means for opening said jaws, and resilient means for closing them.

6. In a device of the. character'set forth, a. carrier. a fixed jaw mounted therein, a movable jaw pivotally mounted in said carrier and having a face arranged to strike upon the adjacent face of said fixed jaw. a lever pivotally mounted in said carrier and adapted to close said movable jaw upon said fixed jaw.

7. In a device'of the character set forth, a carrier. a fixed jaw mounted therein. a movable jaw nivotally mounted in said carrier and having a face arranged to strike upon the adjacent face of said fixed jaw, a

lever pivotally mounted in said carrier and adapted to close said movable jaw upon said fixed jaw, and means for yieldinglydepressing said lever.

8. In a device of the character set forth, a carrier, a fixed jaw mounted therein, a movable jaw pivotally mounted in said carrier and having a fa'ce arranged to strike upon the adjacent face of said fixed jaw, a lever pivotally mounted in said carrier and adapted to close said movable jaw upon said fixed jaw, means for yieldingly depressing said lever and movable jaw, and yielding means'acting upon said movable jaw for raising the latter and said lever.

.9. In a device of the character set forth, a carrier, a fixed jaw mounted therein, a movable jaw pivotally mounted in said can rier and having a face arranged to strike upon the adjacent face of said fixed jaw, a lever pivotally mounted in said carrier and adapted to close said movable jaw upon said fixed jaw, a yielding arm on said lever, 7 and means acting upon said arm for de-- pressing said lever and movable jaw.

10. In a device of the character set forth, a carrler, a fixed aw mounted therein, a

movable jaw pivotally mounted in said car rier and having a face arranged to strike upon the adjacent face of said fixed jaw, a lever pivotallymounted in said carrier and adapted to close said movable jaw upon said fixed jaw, a yielding arm on said lever, means acting upon said arm for depressing said lever and movable jaw, and yielding means acting upon said movable jaw for raising the latter and said lever.

11. In a device of the character set forth, a pair of jaws one movable relatively to the other and having their adjacent faces arranged to open and close upon each other, a biting edge on one of said faces adapted to co-act with the other face and sever a thread presented bet-ween said aws, and

means for preventing complete contact of such biting edge with such other face.

12. In a device of thecharacter set'forth, a pair of jaws one movable relatively to the other having a portion of their adjacent faces arranged to contact with'each other in the closing movement of said jaws, and a biting edgeon one of said faces adapted to co-act with the other face and sever a thread presented between said jaws, and

held out of complete contact with such other face by said contacting portions of said faces.

13. In a device of thecharacter set forth, a carrier, a fixed jaw mounted therein and having a plane upperface, a movable jaw pivotally mounted in said carrier and having a portion of its lower face plane and arranged to contact with such upper face in the closing movement of said jaws, anda biting edgeforining a portion of such strike oner upon the other in the closing movement, and movable means on said carrier separate from said movable jaw and arranged to act upon said movable jaw and close the latter in such biting contact upon said fixed jaw.

In testimony that I claim the invention above set forth I afiix my signature.

PAUL A. WAGNER.- 

